Myopia, farsightedness, astigmatism are the companions of modern people. Contact lenses and glasses correct vision, but wearing them is not always comfortable. Laser correction helps cure eyes completely view. The pros and cons of such an operation will be considered in this article.
A bit of history
The operation is performed on the cornea, which has no blood vessels and therefore can be easily modeled. For the first time, correction became known in the 30s of the twentieth century: then it was called radial keratotomy. During the procedure, incisions were made on the cornea, which, when spliced, changed the shape of the ophthalmic lens.
The effect depended on the rate of tissue repair of the patient. The methodology has ceased to be used since the 80s, but it was she who became the progenitor of the technology "laser vision correction", the pros and cons of which also depend on the individual characteristics of a person. An excimer laser - the precursor of modern correction - appeared in 1976.
How is the operation
The procedure is performed under local anesthesia for fifteen minutes. The upper layer of the cornea bends, and the laser vaporizes the "unnecessary" layers. Next, the bent fabric is superimposed into place and fixed. Epithelial regeneration occurs in a few hours, maximum per day (each person has his own recovery features).
Laser vision correction: pros and cons
As with any operation, this procedure has beneficial advantages and minor disadvantages. The advantages include:
- shortened rehabilitation period (1-2 days);
- lack of hospitalization;
- restoration of acute vision in a few days;
- safe exposure depth;
- return of vision to patients with astigmatism, myopia, hyperopia of any stage.
Laser vision correction: limitations
When performing this operation, some features are considered, in which the use of a laser is not recommended:
- pregnancy, breastfeeding;
- the presence of serious chronic diseases (diabetes, psoriasis, AIDS, asthma, neurodermatitis, eczema);
- mental disorders;
- some eye diseases (e.g., glaucoma, cataracts);
- alcoholism, drug addiction;
- individual tendency to the appearance of keloid scars;
- small thickness of the cornea.
Laser vision correction is necessary in the age period from adulthood (18 years) to 40 years. Until the age of 18, the eye tissues are not yet fully formed, and after 40, age-related hyperopia may occur, which cannot be corrected.
Minuses:
- the operation does not eliminate the reason why vision has fallen;
- under adjustment is possible;
- visual acuity under excessive load may decrease again.
Millions of people wear correction tools (glasses, lenses, etc.), many want to get rid of them forever. Only laser vision correction, the pros and cons of which we examined above, can restore vision in whole or in part. To be sure of success, you need to choose a good clinic, an experienced specialist, read reviews about the operations performed, and, of course, fully undergo the prescribed examination.